Dual antenna receiver for voice communications

Abstract

A dual antenna receiver utilizes spatio-temporal processing in a packet-based network.

1 . A method comprising: 
 receiving two signals from two antennas;    converting the two signals to baseband;    digitizing the two signals; and    linearly combining the two signals to receive voice packets.    
   
   
       2 . The method of  claim 1  further comprising transmitting using one of the two antennas.  
   
   
       3 . The method of  claim 1  wherein linearly combining comprises applying a matched-filter solution for channels associated with the two antennas.  
   
   
       4 . The method of  claim 1  wherein linearly combining comprises selecting combining coefficients to increase a signal to interference ratio (SIR).  
   
   
       5 . The method of  claim 1  wherein linearly combining comprises selecting combining coefficients to whiten spatial and temporal interference.  
   
   
       6 . The method of  claim 1  wherein linearly combining comprises selecting combining coefficients to reduce mean squared error (MSE).  
   
   
       7 . The method of  claim 1  wherein linearly combining the two signals to receive voice packets comprises: 
 linearly combining the two signals to form General Packet Radio Service (GPRS) packets; and    converting GPRS packets to voice packets.    
   
   
       8 . A method comprising: 
 receiving first and second General Packet Radio Service (GPRS) signals using two antennas;    converting the first and second signals to two baseband signals;    digitizing the two baseband signals;    linearly combining the two baseband signals; and    converting received GPRS packets to voice packets.    
   
   
       9 . The method of  claim 8  wherein linearly combining comprises applying a matched-filter solution for channels associated with the two antennas.  
   
   
       10 . The method of  claim 8  wherein linearly combining comprises selecting combining coefficients to increase a signal to interference ratio (SIR).  
   
   
       11 . The method of  claim 8  wherein linearly combining comprises selecting combining coefficients to whiten spatial and temporal interference.  
   
   
       12 . The method of  claim 8  wherein linearly combining comprises selecting combining coefficients to reduce mean squared error (MSE).  
   
   
       13 . An apparatus comprising: 
 a first antenna and a first baseband conversion unit coupled to the first antenna to produce a first baseband signal;    a first analog-to-digital converter to convert the first baseband signal into a first digital sample stream;    a second antenna and a second baseband conversion unit coupled to the second antenna to produce a second baseband signal;    a second analog-to-digital converter to convert the second baseband signal into a second digital sample stream; and    a spatio-temporal processing unit to linearly combine the first and second digital sample streams to receive a voice signal in a General Packet Radio Service (GPRS) network.    
   
   
       14 . The apparatus of  claim 13  wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams by applying a matched-filter solution for channels associated with the two antennas.  
   
   
       15 . The apparatus of  claim 13  wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to increase a signal to interference ratio (SIR).  
   
   
       16 . The apparatus of  claim 13  wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to whiten spatial and temporal interference.  
   
   
       17 . The apparatus of  claim 13  wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to reduce mean squared error (MSE).  
   
   
       18 . The apparatus of  claim 13  further comprising an antenna switch to transmit using one antenna.  
   
   
       19 . An electronic system comprising: 
 a first antenna and a first baseband conversion unit coupled to the first antenna to produce a first baseband signal;    a first analog-to-digital converter to convert the first baseband signal into a first digital sample stream;    a second antenna and a second baseband conversion unit coupled to the second antenna to produce a second baseband signal;    a second analog-to-digital converter to convert the second baseband signal into a second digital sample stream;    a spatio-temporal processing unit to linearly combine the first and second digital sample streams to receive a voice signal in a General Packet Radio Service (GPRS) network; and    a color display device.    
   
   
       20 . The electronic system of  claim 21  wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams by applying a matched-filter solution for channels associated with the two antennas.  
   
   
       21 . The electronic system of  claim 21  wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to increase a signal to interference ratio (SIR).  
   
   
       22 . The electronic system of  claim 21  wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to whiten spatial and temporal interference.